350hp 454 mag carb vs 365hp mag?
#1
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Location: 1000 Islands, Ontario. Canada
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350hp 454 mag carb vs 365hp mag?
Hi all
What changed in the 1997 454 Mag carb engines from the older ones to lose 15hp, 365hp to 350hp? Also, its hard to believe they get an additional 35hp from just the EFI, Am i missing something?
Thnx
What changed in the 1997 454 Mag carb engines from the older ones to lose 15hp, 365hp to 350hp? Also, its hard to believe they get an additional 35hp from just the EFI, Am i missing something?
Thnx
#7
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Everyone is correct. Mercuiser used to advertise their engines at crank HP. The base 454 was 330 at the crank and 310 at the prop. The 454 Mag was 365 at the crank and 350 at the prop. When they came out with the 454 EFI and 502 in 1994 they started advertising prop HP. So the 454 EFI is 385 at the prop and the 502 is 415 at the prop.